Executive Oath of Office: “I do solemnly swear (or affirm) that I
will faithfully execute the Office of President of the United States, and
will to the best of my ability, preserve, protect and defend the Constitution
of the United States." —United States Constitution, Article II, Section 1, Clause 8

It is traditional for the President to give a speech after he is sworn
in on Inauguration Day. This is called an Inaugural Address.
A Vice-President who becomes President upon the death or resignation of
the President does not give an Inaugural Address. Hence, several
American Presidents (such as John Tyler and Gerald Ford) are not on this
list. Policy goals of the new President are often presented in the
Inaugural Address. References to recent events are also noted.
Both George W. Bush and Rutherford B. Hayes made references to the disputed
elections that brought both to power during an Inaugural Address.